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Law Incorporation [45]
3 years ago
5

What is the solutions to 3x+y=-8 and -2x+y=6

Mathematics
1 answer:
Liula [17]3 years ago
6 0
The solutions to your problem I believe is 4 and -6.
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A boat is spotted in the water with an angle of depression of 25° from the top of a lighthouse that is 89 feet tall. To the near
stepan [7]
To calculate this you need to imagine triangle which points are:
boat
Top of lighthouse
Bottom of lighthouse

That triangle has 90 degrees angle at bottom of lighthouse. That means that we can use trigonometry to determine length between boat and bottom of lighthouse

tan(25) = 89/x
x = 89/tan(25)
x = 190.86

after rounding, the answer is D, 191 feet
4 0
2 years ago
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Evaluate function expressions <br><br> 3•f(-4)- 3•g(-2)
MAXImum [283]

Answer:3(-4f-g(to the power of -2)

Step-by-step explanation:

3(-fx4-g(to the power of -2) reorder and get solution.

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3 years ago
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A quality-control center finds that 2 out of 250 toy trains are defective. How many trains would they expect to be defective in
solmaris [256]
Its A. 10,000 divided by 250 is 40. Then multiply 40 by 2 and you get 80

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5 0
3 years ago
What is the unit rate of 162 heartbeats in 60 seconds?
svetoff [14.1K]
162/60 = 2.7 heartbeats per second
4 0
3 years ago
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Write g(x) = 4x2 + 88x in vertex form. The function written in vertex form is g(x) = (x +11)2 + .
romanna [79]

Answer:

y = 4(x + 11)² - 484

Step-by-step explanation:

y = 4x² + 88x

factor the expression

y = 4(x² + 22x)

complete the square

y + ? = 4(x² + 22x + ?)

y + ? = 4(x² + 22x + 121)

add 4 • 121 to the left side

y + 4 • 121 = 4(x² + 22x + 121)

multiply

y + 484 = 4(x² + 22x + 121)

y + 484 = 4(x + 11)²

subtract both sides by 484

y = 4(x + 11)² - 484

6 0
3 years ago
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